Unit 1
Lesson 1 Operations with Signed Numbers
Lesson 2 Variables and Expressions
Lesson 3 Combining Like Terms
Lesson 4 Solving Two-Step Equations
Lesson 5 More Work with Two-Step Equations
Lesson 6 Solving Equations with Variables on Both Sides
Lesson 7 More Work with Variables on Both Sides
Lesson 8 Modeling with Linear Equations
Lesson 9 More Modeling with Linear Equations
Lesson 10 Identities and Inconsistent Equations

Unit 2
Lesson 1 Starting Concepts in Geometry
Lesson 2 Angles and Their Measures
Lesson 3 Angle Pairs
Lesson 4 Geometric Terminology
Lesson 5 Parallel Lines
Lesson 6 More Work with Parallel Lines
Lesson 7 Geometry with Coordinates
Lesson 8 Congruent Figures
Lesson 9 Congruent Triangles

Unit 3
Lesson 1 Introduction to Transformations
Lesson 2 Reflections
Lesson 3 Horizontal and Vertical Lines in the Coordinate Plane
Lesson 4 Reflections in the Coordinate Plane
Lesson 5 Rotations
Lesson 6 Rotations in the Coordinate Plane
Lesson 7 Translations
Lesson 8 Translations in the Coordinate Plane
Lesson 9 Transformations and Congruent Figures
Lesson 10 Rigid Motions and Parallel Lines
Lesson 11 Angle Sums in a Triangle
Lesson 12 Exterior Angles of a Triangle
Lesson 13 Isosceles Triabgles
Lesson 14 Using Algebra to Model Geometry
Unit 4
Lesson 1 Proportional Variables
Lesson 2 Introduction to Dilations
Lesson 3 More Work with Dilations
Lesson 4 Dilations in the Coordinate Plane
Lesson 5 Similar Figures
Lesson 6 More Work with Similar Figures
Lesson 7 Mapping Similarity
Lesson 8 The Angle-Angle Criterion for Similar Triangles
Lesson 9 Similar Triangles and Parallel Lines

Unit 5
Lesson 1 Proportional Relationships
Lesson 2 More Work with Proportional Relationships
Lesson 3 Slope and Similarity
Lesson 4 Equations of Lines
Lesson 5 Slopes and Negative Numbers
Lesson 6 More Work with Equations of Lines
Lesson 7 Finding the Slope of a Line
Lesson 8 Systems of Equations
Lesson 9 Solving Systems Algebraically
Lesson 10 Parallel Lines in the Coordinate Plane
N-Gen Math 8 YouTube Videos